Patellar eversion during total knee replacement: A prospective, randomized trial

The results of this trial showed that retracting rather than everting the patella during total knee arthroplasty resulted in no significant clinical benefit in the early to medium term. We observed no increase in patellar tendon shortening as a result of eversion rather than subluxation. Our findings did suggest that, with subluxation, there may be an increased risk of damage to the patellar tendon and reduced visualization of the lateral compartment, leading to an increase in implant malpositioning with lateral tibial overhang.

www.ncbi.nlm.nih.gov/pubmed/24500582

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